What is the source for gravity, or what causes it in things? I understand that way massive the object is, the force will be great (and depends on length between a second object too), then, the object creates it? How?
In: Physics
Spacetime is curved downwards, which makes nearby objects “roll” (move) towards the object.
Think of it like this: You have a trampoline, and you place a big heavy bowling ball right on it. It rolls right to the center of the trampoline, and there is now a big circular dent around it. You put a golf ball somewhat near this dent, and it will roll down the slope and bump into the bowling ball. This dent is gravity and the trampoline is spacetime. (disclaimer: not a scientist or expert, Wikipedia ususally explains these things pretty well)
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